Phase III: Operational and Safety-Based Analyses of Varied Toll Lane Configurations

Managed lanes facilities are providing an opportunity to reduce travel time as well as pollution worldwide. In 2013, Puerto Rico built their first ever two lane reversible Dynamic Toll Lane (DTL) facility. The 10.4-kilometer managed lane, located at the median of the PR-22 freeway, is shared by Bus Rapid Transit (BRT) and passenger cars. Safety issues have been found associated to sudden lane changing and incorrect use of the designated DTL exit. An online survey was developed to gather information and knowledge of drivers in managed lanes facilities. A driving simulator was used to study the safety aspects of driving behavior along the PR-22 DTL. The University of Puerto Rico at Mayagüez cockpit simulator was used to compare the driving behavior between two configurations of signage and pavement markings. Configuration 1 corresponds to the existing condition of signage and Configuration 2 consists of a proposed treatment of signage and in-lane pavement markings. The information gathered in the online survey was used to develop the proposed treatment. A total of 24 participants drove 6 representative scenarios based on the independent variables traffic flow and time of the day. The performance measurement used to evaluate driving behavior was the vehicle Average Lane Position. The results indicate that Configuration 2 improved the Average Lane Position variable in at least 67% of the zones evaluated, when compared to Configuration 1.

  • Supplemental Notes:
    • Research project being done at the University of Puerto Rico


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Project Managers:

    Kline, Robin

  • Principal Investigators:

    Valdes, Didier

  • Start Date: 20160601
  • Expected Completion Date: 20180630
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01661439
  • Record Type: Research project
  • Source Agency: Safety Research Using Simulation University Transportation Center (SaferSim)
  • Contract Numbers: DTRT13-G-UTC53
  • Files: UTC, RiP
  • Created Date: Jun 28 2016 12:21PM